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共振现象是力学中的一个重要内容,是指当策动力的频率等于物体(或系统)的固有频率时,物体(或系统)做受迫振动的振幅最大.通常演示“共振现象”用的是单摆球,笔者尝试利用弹簧振子来演示共振现象,效果明显,趣味性强.现将自制的共振演示器介绍如下.1仪器组成及制作方法(1)实验装置如图1所示,在一塑料圆盘的中心打一个小孔,以孔为圆心画一同心圆,在同
Resonance is an important part of mechanics and means that the amplitude of an object (or system) to be subjected to forced vibration is maximized when its frequency is equal to the natural frequency of the object (or system). Is a single pendulum ball, I try to use the spring oscillator to demonstrate the resonance phenomenon, the effect is obvious, fun and strong. Now self-made resonance demonstrator are described below .1 instrument composition and production methods (1) experimental device shown in Figure 1, A small hole in the center of a plastic disc to draw a circle with the center of the heart, in the same